WE CARRY OUT COMMERCIAL GAS SAFETY TESTS IN COMMERCIAL KITCHENS SUCH AS RESTAURANTS OR PUBLIC HOUSES TO TEST THE GAS APPLIANCES AND COMMERCIAL BOILERS IN ANY COMMERCIAL BUILDING . THE PRICE SHOWN IS FOR UP TO 5 GAS APPLIANCES , WE CHARGE 30.00 POUNDS PER APPLIANCE FOR ANY ADDITIONAL APPLIANCES .ALL OF OUR ENGINEERS ARE QUALIFIED COMMERCIAL GAS ENGINEERS AVAILABLE TO CARRY OUT WORK ON THE UK MAINLAND IN ANY POSTCODE .